Patents by Inventor SookMee LAI

SookMee LAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10976662
    Abstract: The present application for patent relates to a light-sensitive positive working photosensitive composition especially useful for imaging thick films using a composition which gives very good film uniformity and promotes a good process latitude against feature pattern collapse in patterns created upon imaging and developing of these films.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 13, 2021
    Assignee: Merck Patent GmbH
    Inventors: Weihong Liu, PingHung Lu, Chunwei Chen, SookMee Lai, Yoshiharu Sakurai, Aritaka Hishida
  • Publication number: 20190064662
    Abstract: The present application for patent relates to a light-sensitive positive working photosensitive composition especially useful for imaging thick films using a composition which gives very good film uniformity and promotes a good process latitude against feature pattern collapse in patterns created upon imaging and developing of these films.
    Type: Application
    Filed: April 18, 2017
    Publication date: February 28, 2019
    Inventors: Weihong LIU, PingHung LU, Chunwei CHEN, SookMee LAI, Yoshiharu SAKURAI, Aritaka HISHIDA
  • Patent number: 9012126
    Abstract: The invention relates to a novel positive working photosensitive composition having: at least one photoacid generator; at least one novolak polymer; at least one polymer, having a polymer backbone, said polymer comprising a structure of the following formula: wherein R1-R5 are, independently, —H or —CH3, A is a linear or branched C1-C10 alkylene group, B is a C1-C12 alkyl or alicyclic group, D is a linking group that may be a chemical bond, a carboxylate group, wherein the carbonyl carbon is bonded to the polymer backbone, or a —COOCH2— group, wherein the carbonyl carbon is bonded to the polymer backbone, Ar is a substituted or unsubstituted aromatic group or heteroaromatic group, E is a linear or branched C2-C10 alkylene group, G is an acid cleavable group. The invention further relates to a process for using the novel composition for forming an image.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: April 21, 2015
    Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.
    Inventors: Weihong Liu, PingHung Lu, Chunwei Chen, Stephen Meyer, Medhat Toukhy, SookMee Lai
  • Patent number: 8906594
    Abstract: Disclosed are compositions for negative-working thick film photophotoresists based on acrylic co-polymers. Also included are methods of using the compositions.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: December 9, 2014
    Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.
    Inventors: Chunwei Chen, PingHung Lu, Weihong Liu, Medhat Toukhy, SangChul Kim, SookMee Lai
  • Patent number: 8841062
    Abstract: Disclosed herein is a photosensitive composition comprising a heterocyclic thiol compound or tautomeric form thereof and its method of use on a substrate, which may include a chalcophile substrate.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 23, 2014
    Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.
    Inventors: Weihong Liu, Ping-Hung Lu, Medhat Toukhy, SookMee Lai, Yoshiharu Sakurai, Aritaka Hishida
  • Publication number: 20140154624
    Abstract: Disclosed herein is a photosensitive composition comprising a heterocyclic thiol compound or tautomeric form thereof and its method of use on a substrate, which may include a chalcophile substrate.
    Type: Application
    Filed: December 4, 2012
    Publication date: June 5, 2014
    Applicant: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Weihong LIU, Ping-Hung LU, Medhat TOUKHY, SookMee LAI, Yoshiharu SAKURAI, Aritaka HISHIDA
  • Publication number: 20130337380
    Abstract: The invention relates to a novel positive working photosensitive composition having: at least one photoacid generator; at least one novolak polymer; at least one polymer, having a polymer backbone, said polymer comprising a structure of the following formula: wherein R1-R5 are, independently, —H or —CH3, A is a linear or branched C1-C10 alkylene group, B is a C1-C12 alkyl or alicyclic group, D is a linking group that may be a chemical bond, a carboxylate group, wherein the carbonyl carbon is bonded to the polymer backbone, or a —COOCH2— group, wherein the carbonyl carbon is bonded to the polymer backbone, Ar is a substituted or unsubstituted aromatic group or heteroaromatic group, E is a linear or branched C2-C10 alkylene group, G is an acid cleavable group. The invention further relates to a process for using the novel composition for forming an image.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 19, 2013
    Applicant: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Weihong LIU, PingHung LU, Chunwei CHEN, Stephen MEYER, Medhat TOUKHY, SookMee LAI
  • Publication number: 20130337381
    Abstract: Disclosed are compositions for negative-working thick film photophotoresists based on acrylic co-polymers. Also included are methods of using the compositions.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 19, 2013
    Applicant: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Chunwei CHEN, PingHung LU, Weihong LIU, Medhat TOUKHY, SangChul KIM, SookMee LAI